Ucu Yanu Arbi
UPT Loka Konservasi Biota Laut Bitung, Pusat Penelitian Oseanografi - LIPI. Jl. Tandurusa, Kec. Aertembaga, Kota Bitung, Sulawesi Utara

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KEANEKARAGAMAN KEONG KUWUK DI PERAIRAN HALMAHERA, MALUKU UTARA Arbi, Ucu Yanu
ZOO INDONESIA Vol 19, No 1 (2010): Juli 2010
Publisher : Masyarakat Zoologi Indonesia

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Abstract

Pengamatan
Struktur Komunitas Moluska Bentik di Perairan Sekitar PLTU Grati, Pasuruan, Jawa Timur Arbi, Ucu Yanu
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 15, No 3 (2010): October 2010
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (507.729 KB) | DOI: 10.24002/biota.v15i3.2595

Abstract

Observation on marine benthic molluscs around PLTU Grati waters in Pasuruan was conducted on May and December 2004. The aim of this study was to determine condition and community structure of benthic molluscs living in those areas. Samples were collected using Eckmann grab and sieved through 0.5 mm mesh-sized. The number of molluscs species is 28 species, consisting of 16 species class of gastropoda and 12 species class of pelecypoda. A diversity index (H) ranged 0.845 to 1.158, an evenness index (J) was 0.856 to 1 and a richness index (D) was 19.562 to 31.949. Littorina undulata (Littorinidae) was a dominant species and was relatively widely distributed. In general, this result showed that around PLTU Grati waters had a relatively low benthic molluscs diversity.
A New Record of Rochia maxima (Koch, 1844) Through a Species Clarification of Lola Snail, Bangka Belitung Islands, Indonesia Aisyah, Siti; Pringgenies, Delianis; Supratman, Okto; Wahyudi, Dimas; Rizal, Fahmi; Ariyanto, Dafit; Arbi, Ucu Yanu
Jurnal Ilmiah Perikanan dan Kelautan Vol. 17 No. 1 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.vi.56020

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Graphical Abstract   Highlight Research Lola snails originating from the Bangka Belitung Islands (Nasik Strait, Rebo Waters, and Ketawai Island) were identified as a maxima not to be R. nilotica species based on morphological molecular identification. Maxima and R. nilotica have the same morphological form, but they are genetically different. The clarification of the Lola snail species in this study serves as a reference in determining the conservation status of the Lola snail. The clarification of the Lola snail species serves as a reference in determining the catch quota from the Bangka Belitung Islands.     Abstract The use of Lola snails (Rochia maxima) in the Bangka Belitung has continued to increase. However, research focused on Lola snails originating from the Bangka Belitung has not been thoroughly conducted. In a previous study, the Lola snail sample found in the Bangka Belitung was Trochus niloticus (current name: Rochia nilotica). This study aimed to identify Lola snail species using the DNA barcoding as a way of clarifying Lola snail species that originated in the Bangka Belitung. Lola snail sampling was carried out at three locations, which were Nasik Strait, Ketawai, and Rebo Waters. This study was conducted through five stages, including Lola snail tissue sampling, DNA extraction, amplification by PCR, sequencing, and data analysis. The results showed that the molecular identification of the Cytochrome Oxidase Subunit 1 (COI) gene in Lola snail samples was identified as Rochia maxima species (Koch, 1844). The results of the phylogenetic tree analysis showed that Lola snails found in the Bangka Belitung were close to Tectus maximus (or Rochia maxima) species. R. maxima has a lighter shell than R. nilotica, a clear conical shape, and a circle on the body that does not widen at the edges. Unlike zoologists who said that R. maxima is the primitive form of R. nilotica, the present study found that they have the same morphology and are considered similar but genetically different. The clarification of Lola snail species can be used to determine the conservation status and catching quota of Lola snails from the Bangka Belitung.